A Modified Procedure for the Preparation of 5H,7H-Dibenzo[C,E]Selenepin
Chemistry and Biochemistry
The title compd. (I) was prepd. by reducing biphenyl II (R = CO2H) with LiAlH4, brominating the resulting II (R = CH2OH) with 48% HBr, and cyclizing the resulting II (R = CH2Br) with Se in the presence of Na formaldehyde sulfoxylate and NaOH.
Williams DJ, Macy PK, Hezs DR. 1985. A modified procedure for the preparation of 5H,7H-dibenzo[c,e]selenepin. Organic Preparations and Procedures International: The New Journal for Organic Synthesis 17(4):270.